Window ventilator



E. LAMBRIGIHT WINDOW VENTILATOR Wmv.. 29, B927.

Filed DeC.l7, 1926 gnvefnfoz Patented Nov. 29, 1927.

'EMANUEL LAMBBIGHT, 0F MANSFIELD, OHIO.

WINDOW VENTILATOR.

,Application led December 17, 1926. Serial No. 155,438.

This invention relates to a sheet metal window ventilator.

One of the prin'iary objects of the invention is to construct a window ventilator with end members that will yield under tension to permit the end members of the ventilator to be adjusted to allow the ventilator to fit and conform to various widths of window frames.

A further object is to provide means foradjusting the ventilator to fit different sizes of the Windows, the adjustable parts being held in contact with the window frame-under tension, so that the ventilator will be preventedv from rattling or becoming loose in the window frame.

Further objects are to provide means forv preventing dust, dbris or Vthe like from entering the room through the ventilator and to providemeans for locking the ventilat-or to the window frame to prevent same from being removed from the outside.

- Another' object is to provide means for permitting the window sash to slide in the window frame andpass by the ventilator to rest upon the bottom sill of the frame without coming in contact with or being obstructed by the ventilatoror to permit the sash to be supported by the ventilator if desired. l Y

A further object is to provide means for bracing and strengthening the sheet metal blank between the ends of each series land -sections of slats, the braces also being adapted to fill the gap between the ends of the alined section of each series of slats thereby providing a smooth, plane surface.

Another object is to construct a ventilator of sheet metal that is light in Weight, butl of maximum strength to prevent undue warping, bending or rattling and to so` assemble and construct the parts as to form a flat and smooth box-like structure of unusual rigidity for the purpose intended.

With the foregoing and other objects in view which will proceeds, the invention 'resides in the combination and arrangement of' parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made Within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings accompanying this specication, and forming a part thereof, the

having series vof slats appear as the descriptionpreferable form of my invention is illus-4 trated in which- Fig. l, is a rear or inside View of my improved ventilator.

Fig. 2,l a longitudinal section taken on the lines 44 thereof.

F1g.`3, a fragmentary sectional rear view ofthe ventilator and window frame showing an end member adjusted to diiferentpositions in fulland dot-ted lines.

Fig. 4, an end View of Fig. 3 taken on the lines 3-3 thereofi showing the ventilator in position to permit bythe ventilator.

Fig. `5, 'a cross sectional view of Fig. 1, taken on the lines 1- -1 of Fig. 1 showing the sides of the channel frame engaging the ventilatofgl Fig. 6,'`an end view of Fig. 1, taken on the lines 2- 2 thereof.`

Fig.-7, a. perspective view of one corner of the channel frame or a section of the channel frame showing the means of joining parts of the frame.

Referring to the drawings showing the preferred embodiment of the invention and especially to Fig. 3 the ventilator shown is made from an integral blank of sheet metal pressed therefrom in separate sections.

The end portions of the ventilator 1 and 2 are adapted to aline with the sides of the sash to prevent air from entering the room otherthan through the spaces between the slats. The side 4portions 3 and 4 of the ventilator add strength and rigidity thereto and constitute an integral frame surroundring theyslats, with parts l and 2.

At predetermined points between the portions l and 2 of the integral blank, portions 5 and 6 (or more) are provided to brace the .f Fig. 1-

blank. The sheet metal blank is slitted or cut along parallel lines at 7, the slits having rifght angular extensions 8 at each end thereo The right angular slits 8 do not extend through the full width of each Slat portion of the blank, thereby leaving the integral parallel portions 9 of the slat portions inte'- gral with the portions 1, 2, 5 and 6 of the blank providing a plane and smooth surface on one side of the blank.

Slats (or stationary shutters) 10 are pressed in parallel relation to each other from the sheet metal blank and in angularV relation thereto as shown in Fig. 5. The

angular slats.

angular positionl of the slats with respect to the ventilator `admits air into the room, delects it and causes the air to enter the room in an upward direction through the openings between the slats preventing drafts.

The integral portions 1 and 2 located. at the ends of the sheet metal blank can be made any size or shape desired and the integral parts 5 and G can be made of any size, shape or number desired or necessary to strengthen the ventilator iu accordance with the varying widths of window frames.

Attention is called to the fact that one or more series or sections of slats can be pressed from the blank as desired. To strengthen the blank of sheet metal and impart rigidity thereto the sides of the blank 11 and 12 and the ends 13 and 14are turned up at right angles to the plane of the body portion of the ventilator. (See Figs. 2 and 5.)

This provides a right angularly related inteUral edge surrounding the sheet metal blanrk of a depth or width substantially equal to the depth or width of the down turned The sides of the blank 11 and 12 aand ends 13 and 14 have outwardly pointed protuberances 15 formed thereon, projecting outwardly therefrom to provide means to secure a meshed fabric cloth-16 thereto to filter and effec-tivel separate or remove particles of dust and irt 1n the air which circulates through the ventilator. The filtering device is secured to the ventilator in such a way that it can be removed easil and cleaned, thereby .making the ventilator particularly adapted lfor household use. The fabric is fastened over the ventilator under tension and is engaged by the pointed protuberances 15.

In order to strengthen the ventilator and rovide means to further secure the fabric 1n place and to present a smooth box-like frame, the arts 17 and 17 of the frame are made ciiannel shape and fitted to the sheet metal blank forming the Ventilator along the sides and ends thereof as shown in Figs. 2 and 5. The arts 17-17 are preferably fastened together by means of interconnecting' lugs, the lugs 18 being pressed between and in contact with one yof the'parts 17 and the lugs 18 being pressed in contact with the part of the frame 17 This arrangement strengthens the ventilator, keeps same from warping out of shape and adds rigidity thereto, while, at the same time it provides av frame surrounding the ventilator of channel shape (see Fig. 7) with the sides of the channel iron extending inwardly over the edges of the ventilator and leaving the closed portion of the channel in close contact therewith and also providing plane surfaces around the edges and ends thereof which are adapted to fit the channel shaped grooves of the end members.

The end parts 17 forming the end of the channel frame have integral portions 19 and -20 pressed therefrom to provide pocketflike of the end members 21 and 22 flat circular sha ed s rings 27 are provided and secured wit in t e channel grooves 24 by rivets 28 or the like. The free ends of the springs 27 are provided with hooked ends 29 and 30 which normally engage the pocket members 19 and 20 and stop the outward movement of the end members. The springs exert a tension upon the end members and automatically maintain said members at the limit of their outward throw, which movement does 4not withdraw the grooves or channel shaped parts of the end members from thelr enga ement with the channel shape frame.

W en it is desired to place the ventilator withinv the window frame the end members are forced inwardly against the tension of the springs 27 toward the ends of the ventilator, thereby forcing the springs 27 to yield to fit window frames of various sizes. When the end members are released the springs 27 force the end members in contact with the window frame and holding the end members in yielding contact with the window frame under tension of the springs thereby reventing rattling, displacement, noise and) the like. (See Fig. 3.)

The end members can be adjusted at both ends of the ventilator approximately 4 or 5 inches to fit different sizes of window frames. The end members are held in place by screws 31 and 32. The end members carrying the ventilator can also be moved to aline with the sash or to permit the sash to pass by shifting same through the medium of the slots 33 and 34.

The head of the screw (not shown) prevents any one from removing the screw from the outside as the end members must be lifted up to permit the screw to enter and be moved 1n the slots 35 and 36 to allow the head of the screws to be withdrawn through the enlarged holes 37 and 38. (See Fig. 4'.) rIt will be noted that in Fig. 4 the sash 3 9 is shown in a position to pass by the ventilator or a portion thereof and to rest upon the sill .40. The user of the ventilator can regulate or govern the amount of air that vvlll flow through the ventilator by the ad- ]ustment of the sash with relation to the ventilator. In Fig. 6, the sash 39 of the window is shown supported 'upon' the top of the ventilator and the openingsbetween all of the slats permits air to pass into the room or inclosure.

The arrangement described of slot and screw fastening means provides for shifting the ventilator so that, it may support the sash or to permit the sash to pass bythe ventilator in overlapping-relation thereto as desired. While it is preferable to turnthe ventilator so that `the fabric attachedthereto will be located on the inside, the ventilator can be turned or reversed and exposed from the outside of the room if desired. y V

ln cutting away or slitting the sheet metal blank to form the vangular related slats to provide series of sections o f slats leaving integral port-ions of the blank between thc ends of each section in series, openingsvor gaps are left between the alined ends'of the slats leaving the sharp edges of the ends of the slats adjacent to the openings or gaps.

In' order to fill the openings between the alined ends of the slats and brace the ventilator U-shaped filler braces 41 and 42 are provided having integral lugs 43 formed thereon. rllhe lugs 43 are. bent in close contact with the integral portions 5 and 6 and they securely hold and fasten the said vintegralportions 5 and 6 to the filler braces 41 and 42 as shown in Fig. 1, thereby bracing and strengthening the ventilator.

In addition to the filler braces 41 and 42, U-shaped end filler braces 44 and 45 having lugs 46 formed integral therewith are fastened to the integral end portions `l and 2` at one side of the sheet metal ventilator by turning same over in close contact with said integral end portions of the sheet metal ventilator. l

Ears 47 are formed integral with theU- shaped filler braces 44 and 45 and extend up through apertures formed in the end' portions 1 and 2. They are then turned over in contact therewith holding and fastening the U-shaped filler braces at and adjacent to the ends of the ventilator.

It will be noted that the ends of the filler pieces 48 fit snugly between the part-s of the channel frame and they are adapted to press against the sheet metal blank forcing the partsl of the channel frame thereby holding the ventilator into close contact with the blank forming the ventilator in close contact therewith avoiding and preventing rattling or any looseness or the like of the parts and imparting strength and rigidity thereto which prevents warping, bending or the like.

It will be noted that the construction of a ventilator as described and shown in the drawing provides a ventilator that is light in weight'but of maximum strength and rigidity for the weight of the material used in its construction as the blank from which the ventilator is formed is thoroughly braced by cross and longitudinal U-shaped braces (or channel shape) and a channel shape frame of sheet metal, all of them forming a box-like plane structure having the sides and ends unobstructed and the ventilator also' can' be easily and conveniently handled and placed in the Window frame or withdrawn therefrom with etliciency and without. the aid of skilled help. i

vIt will also be noted that theentire structure is made of sheet metal and so formed and arranged asA to give the maximum strength with a minimum number of parts for size or weight of material used. in its construction.

Attention is called to the fact that the ventilator can be used and held rigidly in 'i place in the window frame if desired without the use of the screws 3l and 32 as a tension of the flatI spring 27 will maintain saine in place.

l claim: v

1. A ventilator comprising a rectangular sheet of metal'having a plurality of series of inclined slats pressed therefrom in angular relation to the body of the sheet metal blank, said plurality of series of slats being spaced apart from each other by right angular vrelated integral flat portions of the sheet metal blank and also having right angular related integral flat portions at the endsA thereof at and adjacent to the ends of the blank, a frame formed of channel shaped metal fitted around the ends and sides of the metal blank and secured thereto, a fabric, and means to removably secure the fabric between the frame andthe ventilator.;

2. A. ventilator comprising incombmation, a rectangular blank of sheet metal, a plurality of slats arranged in sections and pressed therefrom at an incline to the .plane of the body portion, said slats being spaced apart from each other leaving an integral portion of the blank between cach series and an integral portion ateach end thereof, a

channel shape sheet metal frame secured to and arranged around the edges of the blank and tension means fitted to slide over the ends of the ventilator for adjustment of the width thereof as described. i

x 3. A ventilator comprising, 1n combina.- tion, a rectangular blank of sheet metal, a plurality of slats pressed therefrom at an incline to lthel plane of the body portlon, said slats being spaced apart from `each other leaving anintegral flat portion of` the 'blank between each series and an integral portion at each end thereof, achannel sha-pe. sheet metal frame secured to and arranged around the edges of the sheet metal blank, a fabric andmeans to separate the parts of the channel shaped frame to. insert and removably hold thefabric lbetween the ventilator and channel frame.

4. A ventilator comprising in combination,

a rectan lar blank of sheet metal, a plurality o slats pressed therefrom at an ineline to the plane of the body portion, said slats being spaced apart from each other leaving integral portions of the blank between each series and inte ral portions at each end thereof, a channels ape sheet metal frame secured to and arran ed around the edges of the metal blank, en members telescopically fitted to slide over the channel frame at and adjacent to the ends thereof, yielding tension means interposed between the end members and the endsof the channel shaped frame and means to limit the outward movement of the end members.

5. A ventilator comprising in combination, a reetan plurality of s ats pressed therefrom at an incline to the plane of the body portion, said slats being spaced apart from each other leaving integral flat portions of the blank between eac series and integral fiat portions at each end of the blank, a channel shape sheet metal frame secured to and arranged around the edges of the blank, end members teleseopically fitted to slide over the channel frame at and adjacent to the ends thereof and means to permit the end members to be moved in and out of line with the window sash.

6. A ventilator com rising in combination, a 'rectangular blank olf) sheet metal, a plurality of slats pressed therefrom at an incline y to the plane of the body portion, said slats being spa-eed apart from each other leaving integral flat portions of the blank between each series and integral portions at each end thereof, a channel shape sheet metal frame secured to and arranged around the edges of the blank, end members telescopica ly fitted to slide over the channel frame at and adjacent to the ends thereof, means to tion, a rectangular blank of sheet metal, a

plurality of slats pressed therefrom at an lar blank of sheet metal, a`

incline to the plane of the body portion, said slats being spaced apart rom each other leaving integral flat ortions of the blank between each series o slats and also having integral flat portions at each end thereof and channel shaped filler braces arranged between the alined ends of each series of slats to rovide a filler brace to close the ap there etween, said braces having lugs ormed thereon to fasten same to the integral flat portions of the sheet metal blank, as and for the purpose described.

p 8. In a ventilator, in combination, a sheet metal blank having slats ressed therefrom leaving openings in the b ank and a frame made of bars which are detaehably fitted around the edges of the blank, as described and set forth.

9. In a ventilator, in combination, a sheet metal blank provided with slats and openings and a framel made of bars which are detachably fitted around the edges of the blank, movable end members slidably fitted to the frame and means to connect the end members to the frame by ielding members that are also adapted to imit its outward movement, as described and set forth.

10. A ventilator, a sheet metal body provided'with inclined inte al slats and o enings, a channel shape ame compose of channel shaped bars which are detachably secured together around the edges of the sheet-metal body portion, a fabric secured between the edges of the sheet metal body and channel frame, end members slidably fitted to the ends of the channel shape frame and yielding means connected to the end members an adapted to exert a pressure on the end members.

11. In a ventilator, in combination, a sheet metal member having a series of inclined slats lpressed therefrom leavingopenings in the s eet metal member, said member also having the ed es bent, a fabric and a frame composed of c annel shaped bars which are detachably connected together connected to the sheet metal members providing means for attaching the fabric to the sheet metal member and bracing said member.

In testimony whereof I affix my signature.

\ EMANUEL LAMBRIGHT. 

